If your using preview. You can actually pull up a list of all Annotations. Using this list you can select all the Annotations and then delete all the annotations at the same time.

How to do this:
in preview, with your PDF open.
go to the menu bar
click on the “View” menu
from the “view menu” chose “SideBar.”
from the submenu “SideBar” chose “Annotations”
On the right side of the PDF, Instead of a list of page you should now have a list of “Annotations.” click on any of the Annotations listed.
go to the menu bar
click on the “Edit” menu
choose “Select All”
Press the “delete” key

At this point you could use Save As to re-save the file as the ‘share friendly” version of the PDF.

on open theDocuments
repeat with aDocument in theDocuments
tell application "Pages"
open aDocument
set thePath to the path of the front document
set theWordPath to thePath & ".doc"
save the front document as {"doc", "SLDocumentTypeMSWord"} in theWordPath
close the front document saving no
end tell
end repeat
end open